AT THE OBSERVATORY AT PARAMATTA. 

 ri Octantis. (Ann. Var. — 19".33.) 



85 



For want of room, the columns of Refraction and Reduction have been henceforward omitted ; but 

 the sums or differences of their means have been applied to the means of the microscopes, so that the 

 latter corrected means are the divisions of the mural circle corresponding to the superior and 

 inferior culminations of the Star's mean place on the 1st January 1828. These divisions are variable, 

 because the position of the tube is altered and the pillar settles ; but their differences are constant 

 quantities. 



The second microscope during the years of 1822 and 1823 was subject to frequent derangements, 

 from causes over which I had no control. 



